One of the things I have noticed between two of my
astronomy binoculars, both of equal quality, but different size, is the intensity of color on stars. In this regard, my
Nikon 10X70 definitely outdoes the very similar, but smaller
Nikon 7x50 Prostar.
Star colors in the 10x70, by virtue of its larger objective, are definitely more intense. In fact, despite the smaller and more manageable size of the 7x50, I find myself grabbing the 10x70 more often. Guess I am as addicted to color in stars as I am in color on birds.